Chapter 28 System
NXC Series User’s Guide
301
28.7 WWW Overview
The following figure shows secure and insecure management of the NXC coming in from the WAN.
HTTPS and SSH access are secure. HTTP, and Telnet management access are not secure.
Figure 175 Secure and Insecure Service Access From the WAN
28.7.1 Service Access Limitations
A service cannot be used to access the NXC when:
1 You have disabled that service in the corresponding screen.
2 The allowed IP address (address object) in the Service Control table does not match the client IP
address (the NXC disallows the session).
3 The IP address (address object) in the Service Control table is not in the allowed zone or the
action is set to Deny.
28.7.2 System Timeout
There is a lease timeout for administrators. The NXC automatically logs you out if the management
session remains idle for longer than this timeout period. The management session does not time
out when a statistics screen is polling.
Zone Select ALL to allow or prevent DNS queries through any zones.
Select a predefined zone on which a DNS query to the NXC is allowed or denied.
Action Select Accept to have the NXC allow the DNS queries from the specified computer.
Select Deny to have the NXC reject the DNS queries from the specified computer.
OK Click OK to save your customized settings and exit this screen.
Cancel Click Cancel to exit this screen without saving
Table 159 Configuration > System > DNS > Add Service Control Rule (continued)
LABEL DESCRIPTION
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